`RESTPatchAPICurrentGuildMemberJSONBody` has no corresponding response type

### Issue description

`RESTPatchAPICurrentGuildMemberJSONBody` should have a corresponding response type. It might just be an alias to `APIGuildMember`.

### Code sample

```typescript

```

### Package version

N/A

### Runtime

Node.js

### Runtime version

N/A

### Priority this issue should have

Low (slightly annoying)